1, diet to be hygienic: various pathogens and carcinogens almost all enter the body with food, so the primary measure to protect the digestive tract is to pay attention to dietary hygiene. 2.Eat less fried food: fried food is not easy to digest, which will add burden to the digestive tract and cause indigestion, and also lead to elevated blood lipids. 3, eat less gelatinous food: these foods contain more salt and certain carcinogens. 4, eat less cold and irritating food: these foods have a strong stimulating effect on the mucosa of the digestive tract, which can easily cause diarrhea or inflammation of the digestive tract. 5, often eat vegetables and coarse grains: constipation can be harmful to health, and even induce colon cancer in serious cases. Fiber-rich vegetables and coarse grains can enhance intestinal motility to prevent constipation. 6, regular diet: regular meals, regular rationing, can form a conditioned reflex, which helps the secretion of the digestive glands, more conducive to digestion, and help prevent digestive tract diseases. 7, regular quantification: to achieve a moderate amount of food at each meal, three meals a day at regular intervals, to the specified time. Whether or not there is hunger, should take the initiative to eat, to avoid too hungry or too full. 8, the appropriate temperature: the temperature of the diet should be not hot or cold, too hot, too cold diet, after entering the stomach can stimulate the gastric mucosa caused by gastric disease. 9, chew slowly: to reduce the gastrointestinal burden. The more times the food is fully chewed, the more saliva is secreted, which has a protective effect on the gastric mucosa. 10, drinking water timing: the best time to drink water is the morning fasting and one hour before each meal, drinking water immediately after the meal will dilute the gastric juice, with soup soaking rice also affects the digestion of food. 11, pay attention to the cold: cold stomach will make the stomach function is impaired. 12, avoid stimulation: do not smoke, smoking can make the gastric vasoconstriction, affecting the blood supply of the stomach wall cells, so that the gastric mucosa resistance is reduced and induced gastric disease. Should drink less alcohol. Eat less chili, pepper and other spicy foods. 13, supplement vitamin C: vitamin C has a protective effect on the stomach, the gastric juice to maintain a normal level of vitamin C, can effectively play the function of the stomach, protect the stomach and enhance the stomach’s resistance to disease, so eat more vegetables and fruits rich in vitamin C. 14, maintain oral hygiene: saliva by the role of bacteria and their enzymes in the oral cavity, the nitrate will be reduced to carcinogenic nitrate, so you should rinse your mouth after meals, and brush your teeth in the morning and evening.